Your MC number is active - now what? The compliance checklist new carriers must finish: UCR, IRP and IFTA, Form 2290 HVUT, the Clearinghouse, and MCS-150.
An active MC number is the starting line, not the finish. Before and during your first loads: register for UCR ($46 for 0-2 vehicles in 2026; $55 for 2027; registration opened October 1, 2026), set up IRP plates and IFTA through your base state, file IRS Form 2290 if the truck’s taxable gross weight is 55,000 lbs or more, enroll in a DOT drug-and-alcohol testing program with Clearinghouse queries, and calendar the MCS-150 biennial update - all while the 18-month new entrant clock runs.
TL;DR
An active MC number is the starting line, not the finish. Before and during your first loads: register for UCR ($46 for 0-2 vehicles in 2026; $55 for 2027; registration opened October 1, 2026), set up IRP plates and IFTA through your base state, file IRS Form 2290 if the truck’s taxable gross weight is 55,000 lbs or more, enroll in a DOT drug-and-alcohol testing program with Clearinghouse queries, and calendar the MCS-150 biennial update - all while the 18-month new entrant clock runs.
The day FMCSA grants your MC number is the day a second checklist starts. None of the items below are part of the operating-authority application — each is a separate federal or state obligation with its own deadline. Here is the sequence, with the federal source for each obligation.
1. Register for UCR Before Running Interstate
Unified Carrier Registration is the annual federal-state program every interstate motor carrier, broker, freight forwarder, and leasing company completes through its base state at ucr.gov. It is separate from the MC number and separate from the USDOT record. The 2026 fees are bracketed by fleet size: $46 for 0–2 vehicles, $138 for 3–5, $276 for 6–20, and $963 for 21–100; brokers and leasing companies pay the $46 flat rate. For 2027 registrations, which opened October 1, 2026, FMCSA's final rule (91 FR 56063, 49 CFR §367.50) raises those to $55, $167, $333, and $1,163, with brokers and leasing companies at $55. Registration for a year is due before January 1 of that year — after that, the fee is still owed and a non-registrant is exposed to state enforcement action. Annual renewal is the part new carriers forget; a UCR filing service exists for exactly that reason.
2. Set Up IRP Plates and IFTA Through Your Base State
Apportioned plates under the International Registration Plan (IRP) and a fuel-tax license under the International Fuel Tax Agreement (IFTA) both come from your base state — not the FMCSA. IRP distributes registration fees across the states you run; IFTA consolidates fuel-tax reporting into one quarterly return. Most states will not issue the apportioned plate until they see proof the heavy-vehicle tax below is handled, which is why the order of this list matters.
3. File IRS Form 2290 (Heavy Highway Vehicle Use Tax)
Form 2290 applies to any highway vehicle with a taxable gross weight of 55,000 pounds or more. The IRS filing season runs July 1 through June 30, and the return is due by the last day of the month following the month of first use — put the truck on the road in June and the 2290 is due by July 31; first use in July means filing between July 1 and August 31. Three IRS rules trip up new carriers: the return requires an EIN (a Social Security Number is not accepted, and a new EIN takes about four weeks to register in IRS systems); e-filing is required at 25 or more vehicles and encouraged for everyone; and the watermarked Schedule 1 the IRS returns is the proof your state DMV wants before issuing IRP plates. Trucks expected to run 5,000 miles or less (7,500 for agricultural vehicles) can claim suspension on the same form.
4. Stand Up the Drug-and-Alcohol Program and Clearinghouse
Before any CDL driver — including the owner-operator personally — performs a safety-sensitive function, the carrier needs a DOT drug-and-alcohol testing program under 49 CFR Part 382: a written policy, a pre-employment controlled-substances test, and enrollment in a random testing program (§382.305). One-driver companies satisfy the random-pool requirement through a consortium/third-party administrator (C/TPA).
Layered on top is the Drug & Alcohol Clearinghouse at clearinghouse.fmcsa.dot.gov. Under 49 CFR §382.701(a), the employer must run a pre-employment full query on every driver before they haul, and under §382.701(b) an annual query on every driver each year after (a consent-based limited query suffices annually — but if it shows a record, the full query is due no later than 24 hours after the limited query or the driver comes off safety-sensitive duty). Query records are kept three years. Skipping any of this is not a technicality: a missing testing program is a single-occurrence automatic failure of the new entrant safety audit.
5. Keep Duty-Status Records From the First Load
Hours-of-service compliance under 49 CFR Part 395 starts with the first dispatched load — records of duty status for every driver, via an ELD for carriers required to use one. The audit threshold is worth knowing early: failing to require duty-status records becomes an automatic audit failure when 51% or more of examined records are missing or false. A clean first quarter of ELD data is the cheapest insurance the audit offers.
6. Calendar the MCS-150 Biennial Update
Every entity with a USDOT number must refresh its registration information every 24 months — even if nothing changed, even if the company stopped running. The schedule comes straight from the USDOT number itself: the last digit sets the month (1 = January, 2 = February … 9 = September, 0 = October) and the next-to-last digit sets the year (odd digit → odd-numbered years, even digit → even-numbered years), with filing due by the last day of that month. The update is free; a missed update can lead to civil penalties and deactivation of the USDOT number (49 CFR 390.19T(b)(4)). Note: FMCSA has temporarily suspended enforcement of biennial updates and USDOT inactivation for updates due on or after June 1, 2026, until further notice. Updates are filed in the FMCSA's Motus registration system now that account claiming has replaced the legacy Portal flow.
7. Protect the Filings That Keep the Authority Alive
Three filings made during the application stay load-bearing forever: the BOC-3 process agent designation (49 CFR §366; sister site: FastBOC3Filing), the BMC-91/BMC-91X insurance filing (49 CFR §387), and — for brokers — the $75,000 BMC-84 bond or BMC-85 trust. An insurance lapse starts revocation proceedings on its own, and operating without minimum coverage is an automatic audit failure. If a lapse does take the authority down, reinstatement carries the FMCSA's $80 fee on top of fixing the underlying filing. The full cost breakdown covers what each of these lines runs per year.
8. Expect the Safety Audit Inside 12 Months
Everything above feeds the FMCSA's new entrant safety audit, conducted within the first 12 months of the 18-month monitoring period under 49 CFR Part 385 Subpart D. The auditor will ask for the drug-and-alcohol program records, driver qualification files, duty-status records, maintenance files, the accident register, and proof of insurance. Carriers who work this checklist in the first month have nothing to assemble later; the audit becomes a records hand-off instead of a scramble.
Bottom line: After the MC number activates, the compliance stack is UCR (before January 1; $46 for 0–2 trucks in 2026, $55 for 2027), IRP and IFTA through the base state, Form 2290 by the last day of the month after first use, a drug-and-alcohol program with Clearinghouse queries before the first load, ELD records from day one, and the MCS-150 biennial update on the USDOT-number schedule — all with the new entrant safety audit arriving inside 12 months to check the work.